From nobody Fri Dec 19 10:10:10 2025 Received: from mailgw.kylinos.cn (mailgw.kylinos.cn [124.126.103.232]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 870B01A724C for ; Mon, 8 Dec 2025 13:07:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=124.126.103.232 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765199243; cv=none; b=c7xXVS0wTXSBow4zJtkYgV4iiAPy/C6dP6RECAPUGeZJ5cRHkZiWPQpl35yYbdgQHLxLXvoks8p0gD0GeTCSfzhB6QFQnKHwQErQY+SsP6s64PdUbXjvGW8ygRxeHzk0OIIeiGiTjakGec06tGmBLpO47A5z6XTAYE2jh2rT2Xo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1765199243; c=relaxed/simple; bh=3IdqhUlBdKl4OgjeHMcaEgU3eFTMvbpE32DScs0XW20=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version:Content-Type; b=UxtGaeau7Vet+4ZljivlJ4hWAY50mSWQO0ljkOyj0qz8PZXKSP8O6hPX3R1qGaP7yzMwirEJm8StFgIY3jQ5adjWmEs/vt3214dCoWggbHAgXmQCWknDX2+HOKo6rXE3lDVbudGChhDtnZ83TL7bnJ0Y9Onf7cVWEz94WI4Wnug= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn; spf=pass smtp.mailfrom=kylinos.cn; arc=none smtp.client-ip=124.126.103.232 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=kylinos.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=kylinos.cn X-UUID: cd8a2760d43611f0a38c85956e01ac42-20251208 X-CTIC-Tags: HR_CC_COUNT, HR_CC_DOMAIN_COUNT, HR_CC_NAME, HR_CC_NO_NAME, HR_CTE_8B HR_CTT_TXT, HR_DATE_H, HR_DATE_WKD, HR_DATE_ZONE, HR_FROM_NAME HR_SJ_LANG, HR_SJ_LEN, HR_SJ_LETTER, HR_SJ_NOR_SYM, HR_SJ_PHRASE HR_SJ_PHRASE_LEN, HR_SJ_WS, HR_TO_COUNT, HR_TO_DOMAIN_COUNT, HR_TO_NO_NAME IP_TRUSTED, SRC_TRUSTED, DN_TRUSTED, SA_TRUSTED, SA_EXISTED SN_TRUSTED, SN_EXISTED, SPF_NOPASS, DKIM_NOPASS, DMARC_NOPASS CIE_GOOD, CIE_GOOD_SPF, GTI_FG_BS, GTI_RG_INFO, GTI_C_BU AMN_GOOD, ABX_MISS_RDNS X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.6,REQID:402eb0f5-6d2b-4199-8052-996aec4ff737,IP:15,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:-30,FILE:0,BULK:0,RULE:Release_Ham,ACTI ON:release,TS:-20 X-CID-INFO: VERSION:1.3.6,REQID:402eb0f5-6d2b-4199-8052-996aec4ff737,IP:15,URL :0,TC:0,Content:-5,EDM:0,RT:0,SF:-30,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-20 X-CID-META: VersionHash:a9d874c,CLOUDID:07459f0a6b05221d6833544ee8b77fbd,BulkI D:251208210711KBQGF9TR,BulkQuantity:0,Recheck:0,SF:10|38|66|78|102|127|850 |898,TC:nil,Content:0|15|50,EDM:-3,IP:-2,URL:0,File:nil,RT:nil,Bulk:nil,QS :nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,A RC:0 X-CID-BVR: 2,SSN|SDN X-CID-BAS: 2,SSN|SDN,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-CID-RHF: D41D8CD98F00B204E9800998ECF8427E X-UUID: cd8a2760d43611f0a38c85956e01ac42-20251208 X-User: pengcan@kylinos.cn Received: from localhost.localdomain [(116.128.244.171)] by mailgw.kylinos.cn (envelope-from ) (Generic MTA with TLSv1.3 TLS_AES_256_GCM_SHA384 256/256) with ESMTP id 1920003480; Mon, 08 Dec 2025 21:07:09 +0800 From: Can Peng To: jason.wessel@windriver.com, danielt@kernel.org, dianders@chromium.org, arnd@arndb.de, gregkh@linuxfoundation.org Cc: kgdb-bugreport@lists.sourceforge.net, linux-kernel@vger.kernel.org, Can Peng Subject: [PATCH] kgdbts: mark kgdbts_option_setup() with __init to free init memory Date: Mon, 8 Dec 2025 21:05:25 +0800 Message-Id: <20251208130525.2775885-1-pengcan@kylinos.cn> X-Mailer: git-send-email 2.25.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable The kgdbts_option_setup() function is invoked only once early in boot via the __setup("kgdbts=3D", ...) mechanism to parse the kernel command-line option.After init is complete, it is never called again. Annotating it with __init places the function in the .init.text section, enabling the kernel to free its code memory during the init memory cleanup phase (free_initmem()). This reduces the kernel=E2=80=99s runtime memory footprint with no functional side effects. Signed-off-by: Can Peng --- drivers/misc/kgdbts.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/misc/kgdbts.c b/drivers/misc/kgdbts.c index 0cf31164b470..4a7022e263ed 100644 --- a/drivers/misc/kgdbts.c +++ b/drivers/misc/kgdbts.c @@ -1066,7 +1066,7 @@ static void kgdbts_run_tests(void) configured =3D 0; } =20 -static int kgdbts_option_setup(char *opt) +static int __init kgdbts_option_setup(char *opt) { if (strlen(opt) >=3D MAX_CONFIG_LEN) { printk(KERN_ERR "kgdbts: config string too long\n"); --=20 2.25.1